Abstract
The two layer reflection reducing coating for glass whose Ist and 2nd layer are respectively and approximately λ/4 and λ/2 thick optically (λ being the appropriate wave-length), when satisfying some conditions, is knownto have relatively good spectral reflection characteristics.
Theauthor determined the refractive indices of two layers of this type of reflection reducing coating in order that the reflection may be zero at the given opticalthicknesses, made it experi-mentarilly through the use of centrifugal and evaporation processes, and got expected results.
